Anthropic
claude-sonnet-4-5-20250929 API
Call claude-sonnet-4-5-20250929 by Anthropic through one OpenAI-compatible API. Keep your SDK, change the base URL, and pay per token from your Yeap balance.
Claude Sonnet 4.5 is an AI model provided by anthropic.
New LLM API accounts get $5 of free credit.
Quick start
Call claude-sonnet-4-5-20250929 in a few lines
Use any OpenAI SDK or plain HTTP. Point the base URL at Yeap Cloud and set the model name.
curl https://llm.yeap.cloud/v1/chat/completions \
-H "Authorization: Bearer $YEAP_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-5-20250929",
"messages": [{"role": "user", "content": "Hello"}]
}'claude-sonnet-4-5-20250929 variants
Same model with a different reasoning effort, mode or snapshot. Use the exact name in the model field.
| Model | Input / 1M tokens | Output / 1M tokens |
|---|---|---|
claude-sonnet-4-5-20250929-thinking | $3 | $15 |